Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 495)

Dresser/Wheel Radius Compensation
Chapter 15
15-7
Dresser Radius
The control can compensate for any dressing error resulting from slight or
even large radius of the dresser tip. To do so, you must enter the radius of
the dresser in the radius table for radius compensation to properly
compensate.
Figure 15.4
Dresser Radius for a Typical Diamond Point Dresser
.05
Radius
12084-I
Typically during diamond point dressing, the wheel physically moves
across the dresser (i.e. the dresser becomes the shaping tool and the wheel
becomes the part). Actual axis motion of the wheel is typically opposite
the relative dresser motion. See Table 15.A for compensation direction for
G codes.
Figure 15.5 assumes that you configure your grinding wheel to move
around a fixed dressing tool. On some machine applications, the dressing
tool is mounted on independently moving axes. In this case, see your
system installer’s documentation for details on compensation direction.
By shifting the currently active coordinate system zero point to the tip of
the diamond dresser, programming dressing is simplified. This is because
you can program the control point of the wheel about the actual dressing
edge of the dresser.